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Testing DNS

Diagnostics > DNS Lookup performs simple forward and reverse DNS queries to obtain information about an IP address or hostname, and also to test the DNS servers used by the firewall.

To perform a DNS Lookup:

  • Navigate to Diagnostics > DNS Lookup

  • Enter a Hostname or IP address to query

  • Click fa-search Lookup

The results of the DNS query are displayed on the page, along with supporting information and options.

The addresses returned by the DNS query are printed in the Results panel, along with the record type.

Next to the fa-search Lookup button is a new button labeled fa-plus Add alias, which does exactly that: It creates an alias under Firewall > Aliases containing the results of the query as entries in the alias.

Underneath the results is a table showing the resolution Timings per server. This shows how fast each of the configured DNS servers responded to the specified query, or if they never responded.

The More Information panel contains links to ping and traceroute functions on the firewall for this host, and links to external tools for looking up information about who owns the host or IP address.